Pump



Nov. 19, 1946. F. A. LANE 2,411,438

l PUMP Filed nec. 1s, 19542 /llll 'lill/14111111,

ENTOR.

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Patented- -Nov.- 19 1.946

. UNITED-f sTA'ri-:s PATENT ori-ice Y PUMP "l, Fred A. Lane, Shelburn,Ind.. assigner to Lane Motors Incorporated, Shelburn, Ind., a.corporation of Indiana ApplicationDecember 18, 1942, Serial No. 469,386

` the description proceeds.

To the accomplishment o1 fthe above and related objects, my inventionmay be embodied in the forms illustrated in the accompanying drawing,attention being called to the fact, however, that the drawing isillustrative only, and that change' may be made in the specicconstructions illustrated and described, so long as the scope of theappended claims is not violated.

Fig. 1 is a longitudinal section through one form oi pump constructed inaccordance with my invention;

Fig. 2 is a transverse section taken substantial-` ly on the line 2-2 ofFig. 1 and looking in the direction of the arrows;

Fig. 3 is a transverse section taken substantially on the line 3-3 ofFig. 1 and looking in the direction of the arrows; Y i

Fig. i is an elevation ofthe rotary cam. forming an element of the'pumpdisclosed in Fig. l;

Fig. 5 is a at projection of the cam or Fis. i;

Fig. 6 is a longitudinal section through a second form of pumpconstructed in accordance with my invention; and

Fig. 'i' is a transverse 'section taken substan tially on the line 'i--lof Fig. c;

Fig. 8 is a sectional view of an operating detail.

Referring more particularly to the form of my invention disclosed inFigs. l to 5 inclusive, it will be seen that I have illustrated ahousing 23, formed to yprovide a longitudinally extending cylinder 2|.At one end, said housing is formed with a socket 23 coaxial with thecylinder 2|, in which is mounted an anti-friction bearing 22 forming ajournal mounting for one end oi a shaft 24, the other end of which issupported in an anti-friction bearing 25 carried in a suitable socket 26formed in a closure head 21 9 Claims. (Cl. 10S-458) diametricallyopposed to each other and each communicating withV the opposite ends ofthe cylinder 2|. An inlet port 3|) opensinto the chamber 28 and willnormally be connected to a source of'fiuid to be pumped. Y

f Outlets ports 3| and 32 communicate respectively with opposite ends ofthe cylinder 2|. Keyed or otherwise suitably secured to that end of theshaft 24 adjacent the outlet port 32 is a disc 33 suitably formed withperipherally spaced sockets, paraxial with Ithe shaft 24, for thereception of a plurality of tubes 34, 34a, 34h, 34C, and 34d. While fivesuch tubes are shown, it will be understood -that any suitable number ofsuch tubes may be used. 'I'he disc 33 is further formed with a.corresponding number of radially extending ports 35, each communicatingwith the interior of one of the said tubes. It will be readily seen thatthe diameter ofy the disc 33 is appreciably less than -the diameter ofthe cylinder 2|.

Sui-tably keyed or otherwise secured to the shaft 2d adjacent theopposite end of the cylinder 2| is a similar disc 36 similarly providedwith sockcooperating withthe housing 2li to close that end i ets,peripherally spaced and paraxial with the shaft 23, receiving a similarseries of tubes 31, 31a, aib, 37e, and 31d, peripherally staggered withrelation to the tubes carried by the disc 33. `The disc 36 is similarlyformed with radial ports 38, 33a, 38h, 38o, and 38d, respectively,communieating with the interiors of the said tubes carried by the disc36 and opening through the outer periphery of the disc 36. It will beseen that the diameter of the disc 36 is considerably less than thediameter of the cylinder 2 l. i

suitably secured within the cylinderl 2| adjacent the outlet port 32thereof'is a -block 39, shaped as a segment of an annulus having anexternal radius corresponding to the radius of the cylinder 2| and aninternal radius corresponding to the radius of the disc 33, said block39 being interposed between the disc 33 and the internal surface of thecylinder 2 I. Said block 39 is formed with a radially extendingport Mregistering with the outlet port 32 and with an arcuate groove 4| withwhich the ports 35 oi. the disc 33 successively register.

A similar block 42 is suitably secured in the opposite end of thecylinder 2| with its: radially extending port 43 in registry with theoutlet port 3|, and with its arcuate groove 44 positioned for successiveregistry with the ports 38 etc., of the disc 36.

A cylindrical piston 45 is loosely mounted upon the shaft 24 between thediscs 33 and 36. Said piston is formed with an annular series of axiallyextending chambers 46, 46a, 46h, 43o, and 46d opening through that endof the piston adjacent the disc 36, and closed at their opposite ends,said chambers being formed to receive snugly and slidably the tubes 31,31a, 31h, 31c, and 31d, respectively. The piston is further formed witha similarseries of chambers 41, 41a, 41h, 41e, and 41d opening throughthat end of the piston`4adjacentthe disc 33 and closed at their oppositeends, and formed and arranged to receive snugly and slidably Ithe .tubes34, 34a, 34b, 34o, and 34d, respectively.

It will be obvious that the engagement of the tubes` of the 31 series inthe chambers of the 46 series, and the engagement of the tubes ofthe 34series in the chambers of the 41 series, will provide a drivingconnection between the shaft 24 and the piston 45 of such character astoenforce participation of the piston 45 in rotary movement of the shaft24, while leaving said piston free to reciprocate axially with respectto said shaft.

The piston 45 is formed with a cam track indicated generally by thereference numeral 48. Said cam .track is preferably of the form fullyillustrated in Figs. 4 and 5, comprising a con-tinuous ygroove extendingthree times about the periphery of the piston 45 and comprising a rstreach 49 extending from the right-hand end of the piston as viewed inFig. 1 to the left-hand end thereof within a peripheral extent of 270degrees; a return reach 50 extending from the left-hand end of thepiston to the right-hand end thereof within a peripheral extent of 270degrees; a second advancing reach extending from the right-hand end ofthe piston to the lefthand end thereof within a third peripheral extentof 270 degrees; and a, second return reach 52 extending from theleft-hand end of the piston to the right-hand end thereof within afourth peripheral extent of 270 degrees. It will thus be seen that threecomplete rotations of the shaft 24 will produce two complete cycles ofreciprocation of the piston 45.

Within a suitable projection 53 of the housing is stationarily mounted acam follower 54 having a, toe 55 shaped for reception in the cam groove48. Said follower 54 is oscillably received in the housing projection 53and is held in place therein by a threaded cap 56.

With the parts in the positions illustrated in Fig. 1, rotation of theshaft in a clockwise direction as viewed from the right will carry withit the discs 33 and 36 and their associated tubes, and will thereforecause clockwise rotation of the piston 45, whereby the follower foot 55will be caused to' move through the reach 49 of the cam groove 48 toforce the piston 45 toward the right. Such movement of the piston willtend to reduce pressure in that portion of the cylinder to the leftv ofthe piston, not only because of the withdrawal of the piston itself fromthat portion of the cylinder, but also by reason of the withdrawal ofthe tubes of the 34 series from the chambers of the 41 series. Thus,liquid present in that end of the cylinder will be drawn into the saidtubes and chambers, through the ports 35 immersed in such liquid, andfurther liquid, to take the place of the liquid so drawn into the saidchambers,

will be drawn from the source through the inlet port 30.

, ofthe 14 series.

, y 4 registry with the groove 44 of the block 42,'s0 that the liquidpresent in the chamber 46 and tube 31 will be forced outwardly throughthe outlet port 3|. Of course, it is to be understood that some sort ofcheck valve arrangement will be associated with the outlet ports 3| and32.

As the port 38 associated with the tube 31 moves out of registry withthe groove 44, the port 38a will move into registry with said groove 44;and further movement of the piston toward the right will force liquidfrom the-chamber 46al and tube 31a out through the outlet port 3|.

As the shaft 24 completes 270 degrees of rotation, the follower foot 55will move from the cam groove reach 49 into the reach 50 to start thepiston on its return movement from the righthand end of the cylinder 2|toward the left-hand end thereof; and thereupon the above processes willbe reversed. During such reverse movement described. A housing 6|) isformed to provide a cylindrical chamber 6| at one end of which ismounted an anti-friction -bearing 62 suitably supported in a pocket 63coaxial with: the cylinder; and said bearing supports one end of a shaft64, the opposite end of which is supported in an anti-friction bearing65 mounted in a pocket 66 formed in a, closure head 61..

A chamber 68 provides communication, substantially at all times, betweenopposite ends of the cylinder 6|; and an inlet passage 19 opens intosaid chamber 66, being normally connected to a scurce of fluid to bepumped, Outlet ports 1| and 12 open from the opposite ends of thecylinder 6|, respectively.

A cylinder block 13 is xed or keyed to the lefthand end of the shaft`64being formed with a peripherally spaced series of paraxial cylinders,only two of which, 14 and 14d, ae shown. Such cylinders open throughthat end of the block 13 facing the midpoint of lthe shaft 64, and eachof said cylinders is provided, at its closed end, with a port, such asthose indicated at 15 and 15d.

A similar cylinder block 16 is similarly mounted adjacent the oppositeend of the shaft, and is similarly formed with paraxial cylinders, onlytwo of which, 11 and 11d, areshown: 'I'he open ends of the cylinders ofthe 11 series face the open ends of the cylinders of the 14 series; andthe opposite ends of the cylinders of the 11 series are provided withports such as those 'shown at 18 and 18d. l

A part annular control block 19 is suitably secured in the left-hand endof the cylinder with its radially extending port in registry with theoutlet port 12, and withA its part annular groove 6|, similar to thegroove 44 of the block l42 of the structure illustrated in Figs. 1 to 5.

positioned for selective registry with the ports, such as the ports 15,yand 15d, of the cylinders A similar block 82 is similarly mounted at theopposite end of the cylinder,

' with its radial port 83 in registry with the outlet port 1|, and withits part annular groove 84 arranged for selective registry with theports, such as the ports'18 and 18d, of the cylinders of the 11 series.

a shaft journalled in said housing, a member slidably sleeved on saidshaft within said housing and reciproca'ble therein, said member beingformed with a continuous peripheral cam groove, means carried by saidhousing and held against movement axially of said housing and engagingin said cam groove to convert rotation of said member into reciprocationthereof axially of said housing, a series of peripherally-spaced,axiallyextendingV cylinders formed in said member and opening throughone end thereof, a corresponding yseries of tubular pistons supportedfrom said shaft and each having an end snugly slidably4 received in oneofI said cylinders, said' pistons being fixed relative to said shaft,each of said tubular pistons having a radially opening mouth remote fromthat end thereof received in a cylinder, said\ member further beingformed with a second series of peripherally-spaced, axially-extendingcylinders opening through the other end of said member and peripherallystaggered with respect to said first-named series of cylinders, a secondcorresponding series of tubular pistons supported from said shaftadjacent that endof said housing remote from the support of said.first-named series of pistons, veach piston of said 'last-named serieshaving an end snugly slidably received in shaft into reciprocation of y8 s for rotation with a portion thereof located within said housing, aseries of peripherally-spaced, axially-extending elements xedlyassociated with said shaft within said housing, a member in vsuchhousing, slidable axially with respect to said shaft, and cooperatingwith allof said elements to form a series of independent,variable-volume. chambers, means for converting rotation of said saidmember to vary the volumes of said chambers, each of said chambers beingprovided with aradially-'outwardlyopening port spaced inwardly from thewall of said housing, a fluid outlet port for said housing, meansproviding a radially-inwardly-opening, perlpherally-extending groovebodily located upon the radius of said chamber ports and communicatingwith said housing fluid outlet port, whereby `each of said chamberscommunicates withl said' outlet port during a part of each rotation ofsaid shaft, and communicates with the interior of said housing duringthe remainder of each rotation of said shaft.

one of the cylinders of said last-named series,

said last-named series of pistons being fixed relative to said shaft andeach having a radially opening mouth remote from that end thereofreceived in a cylinder, fluid inletmeans providing communication betweena source of iiuid to be pumped and both ends of said housing, and fluidoutlet means opening from each end of said housing, said fluid outletmeans comprising, at each end of said housing, an outlet portcommunicating with a radially inwardly opening, peripherally elongatedgroove positioned for successive registry with the mouths of the tubularpistons mounted adjacent its housing end, the peripheral extent of saidgroove being only slightly less than the peripheral spacing betweenadjacent mouths, said mouths i communicating alternately with saidlast-named groove and with said uid inlet means during rotation of saidshaft.'

3. Pumping mechanism comprising a closed housing having a uid inletport, a shaft mounted for rotation with a portion thereof located withinsaid housing, a series of peripherally-spaced, axi- -ally-extendingelements iixedly associated with said shaft within said housing, amember in said housing, slidable axially with respect to said shaft,

5. Pumping mechanism comprising a reservoir for duid to bepumped, aplurality of variablevolume chambers within said reservoir, each havinga port, a reciprocator cooperable with all of said chambers to vary thevolume thereof, an outlet common to said. chambers, and means fordriving said reciprocator while producing relative movement between saidchambers and Vsaid outlet to eiect and destroy 'registry between saidchamber ports and said outlet successively to' cause fluid from certainof said chambers to be discharged through said outlet during a part ofthe cycle of volume reduction thereof, said chamber ports opening intosaid reservoir when outl of registry with saidoutlet, whereby fluid maybe discharged therefrom to said reservoir during another part of suchcycle. v

6. Pumping mechanism comprising a pumping chamber and means for varyingthe`volume of said chamber including a rotor having a continuousperipherall cam trackfollower means engageable wtih said cam track andcooperable therewith to convert rotation of said rotor into relativereciprocation between said rotor and said follower means, means forcausing such relative reciprocation to produce opposite variations inthe volume of said pumping chamber, said follower means including a.foot engageable with said cam track and carried by a piston reciprocablymounted in a cylinder upon an axis substantially radial with respect tosaid rotor, a fluid outlet from y said pumping chamber, conduit meansconnecting said fluid outlet with said cylinder to operate said piston,upon elevation of pressure in said cylinder beyond a predeterminedvalue, to withdraw said foot from operative engagement with said camtrack to render further rotation of said rotor ineffective to producevarand cooperating with all of said elements to form a series ofindependent, variable-volume chambers, means for converting rotation ofsaid shaft into reciprocation of said member to vary the volumes of saidchambers, each of said chambers being provided with a radially-openingport, a uid outlet port for said housing; a fluid inlet port for saidhousing; and means, providing a passage with which said chamber portssuccessively'register during rotation of said shaft, said passagecommunicating with said housing outlet port, and said chamber portscommunicating alternatively with said inlet port.

4. Pumping mechanism comprising a closed housing having a fluid inletport, a shaft mounted 75 iations in the volume of said pumping chamber.

7. Pumping mechanism comprising a closed housing having a fluid inletport, a shaft mounted for rotation with a portion thereof located withinsaid housing, a. series of peripherally-spaced, ax-

ially-extending elements fixedly associated with said shaft within saidhousing, a member in said housing, slidable axially with respect to saidshaft, and cooperating with all of said elements to form a series ofindependent, variable-volume chambers, means for converting rotation ofsaid shaft into reciprocation of said member to vary the 4volumes ofsaid chambers, each of said chambers being provided with aradially-opening port, a fluid outlet port for said housing, and a fluidin- A piston element 85V is loosely mounted upon the shaft 64 and withinthe cylinder 8|. Said piston carries a series of oppositely projectingpiston rods 86, 86a, 86h, 86C, 86d, 85e, 86j, and 86g, arranged in aperipheral series and projecting oppositely from the ends of the piston85 in the manner clearly illustrated in Fig. 6. As is there clearlyshown, the left-hand ends of .the rods of the 86 series are snugly andslidably received in the cylinders of the 14 series; while theright-hand ends thereof are similarly received in the cylinders of the11 series. The engagement of the rods in the two series of cylindersprovides the rotary driving connection between the shaft 54| and thepiston 85. y

Said piston 85 is externally provided with a cam groove, indicatedgenerally by the reference numeral 48|, and preferably corresponding incontour to the cam. groove 48 of Figs. d and 5. Within a projection 81on the housing d@ is oscillably mounted a follower element 3d having afoot 89 operatively received in the cam groove 48|; and said followerelement is held in place by a threaded cap 90. A

The operation of the pump of Figs. 6 and 'l is closely similar to theoperation of the pump of Figs. l to 5. As the shaft 66 is driven, thecylinder blocks 13 and 16 will be rotated, and will carry with them Vthepiston 85. Because of the engagement of the follower foot t9 in the camgroove 48|, rotation of the piston 85 will result in reciprocationthereof. As the piston d5 moves from the position illustrated in Fig. 6toward the left, fluid in the cylinder 'ldd will be driven out throughthe groove 8| and radial port d@ of the block 19 and through the outletport i2, with which is associated a suitable check valve mechanismpermitting fluid to ow outwardly therethrough but preventing inwardiiow' of fluid therethrough. As the cylinder block 13 rotates in aclockwise direction, as viewed from the right, the port 15d willultimately move out of registry with the groove 8|, and almostsimultaneously the corresponding port 15e of the next cylinder 14e inthe series (not shown) will move into registry with the groove 8i, sothat continued movement of the piston 85 toward the left will drivefluid from the cylinder 1de through the outlet port 12.

Meantime, movement of the piston 85 toward the left' will be withdrawingthe rods of the @d series from the cylinders of the 11 series, to drawfluid from the interior of the cylindrical chamber' 6| into thosecylinders of the l1 series whose ports, corresponding to the ports 1d,are open to the interior of the cylindrical chamber 6|, thus filling thecylinders of the 11 series, withdrawing a mess of .fluid from theinterior of the cylindrical chamber 5|, and causing fluid to iiow intothe chamber 58 and cylindrical cham- -ber 5| through the inlet port 10.

Obviously, one complete throw of the piston 85 from its illustratedposition to the opposite end of its `path will empty the cylinders ofthe 14 series and fill thexcylinders of the 11 series; while a returnreciprocation of piston 85 will empty the cylinders of the 11 series andiill the cylinders of the 14 series. l

In Fig. 8, I have shown an automatic control mechanism which may befused with any one of the assemblies above described.' In place ofthehousing projection 53. of Fig. ,1, for instance,

body 25| having a foot 252 shaped to engage operatively in the camgroove of any one of the cam rotors of the. assemblies above described.The housing projection 53 is further formed to provide a cylinder 253separated from the chamber 250 by a substantially fluid-tight partition254 in which is guided a stem 255 connecting the follower body-25| witha piston 255 reciprocably and oscillably mounted Ain the cylinder 255.Communicating with opposite ends of the cylinder 253 are ports 251 and258 which are suitably connected through suitable valve mechanism'to thepressure existing in the portion of the cylinl a source of fluid underpressure. It will. be obvious that, if the valve mechanism is soactuated as to supply to the portion of the cylinder 253 below thepiston 255 a pressure higher than der above the piston 25H5, the piston256 will be elevated to lift the follower 25|, thus disengaging the foot252 from its cam groove. Such disengagement of the follower foot 252from the cam groovewill, of course, render further rotation of `the camrotor inoperative to produce re# ciprocation thereof; and will thusinterrupt operation of the pumping mechanism.

It will be clear that, if desired, the passages 525i and 25d may be soassociated with the pressure tank or other point of use supplied by thepumping mechanism, that pumping operation of the pumping mechanism willbe automatically interrupted'whenever the pressure at such point of useexceeds a predetermined value, and will be automatically reinitiatedwhenever the pressure at said point drops below a predetermined value.Alternatively, there may be a .direct connection between the passages251 and 253 and the pumping cylinder, so that excessive pressureexisting in the cylinder will shift the follower I claim as myinvention:

l. Pumping mechanism comprising a housing, a shaftl journalled in saidhousing, a member slidably sleeved on said shaft within said housing andreciprocable therein, said member being formed with a continuousperipheral cam groove, means carried by said housing and held againstVmovement axially of said housing and engaging in said cam groove toconvert rotation of said member into reciprocation thereof axially ofsaid housing, a series of peripherally spaced,vaxially extendingcylinders formed in said member and opening through one end thereof, acorresponding series of tubular pistons supported from Said .shaft andeach having an end snugly slidably received in one of said cylinders,said pistons being nxed relative to said shaft, each of said tubularpistons having a radially opening mouth remote from that end thereofreceived in a cylinder, said member further being'formed with a secondseries of peripherally-spaced, axiallyextending cylinders. openingthrough the other end of said member and peripherally staggered withrespect to said rst-named series of cylin-` ders, a second correspondingseries of tubular pistons supported from said shaft adjacent that end ofsaid housing remote from the support of said rst-named series 4ofpistons, each piston of said last-named series having an end snuglyslidably received in one of the cylinders of said the housing may beformed with a projection last-named series, said last-named series Vofpistons being fixed relative to said shaft` and each having a radiallyopening mouth remote from `that end thereof received in'a cylinder,'fluid inlet means providing communication between a source `oi duid tobe pumped and both ends of let port for said housing, a passagecommunicating with said housing outlet port, said chamber portsalternatively communicating, during rotation of said shaft, with saidpassage and said inlet port.

8. Pumping mechanism comprising a closed housing having a uidinlet port,a shaft mounted for rotation with a portion thereof located `within saidhousing, a member in said housing pro- 1 viding a series ofperipherally-spaced, axially-ex-v tending cylinders, a member in saidhousing provided with a corresponding series of peripherallyspaced,axially-extending plunger elements, each snugly slidably received in oneof said cylinders, each of said cylinders and its plungencooperating todefine' a variable-volume chamber, one of said members being xedlyassociated with said shaft, and the other of said members beingrotatable with but slidable axially with respect to said shaft, meansfor converting rotation of said shaft into reciprocation of saidslidable member to vary the Volumes of said chamber, each of saidchambers being provided with a. radiallyopening port, a fluid outletport for said housing, and means providing a passage communicating withsaid housing outlet, said ports of said chambers registeringsuccessively with said passage as said shaft is rotated, and openinginto said housing between periods of registry with said passage.

l0 9. Pumping mechanism comprising a closed housing having a iiuid inletport, a shaft mounted for rotation with a portion thereof located withinsaid housing, a member in said housing providing 'a series ofperipheraliy-spaced, axially-extending chambers, a member in saidhousing provided with a corresponding series of peripherallyspaced,axially-extending plunger elements. each snugly slidably received in oneof said cylinders, one of said members being fixedly associated withsaid shaft and the other of said members being rotatable with butslidable axially with respect to said shaft, means for convertingrotation of said shaft into reciprocation of said slidable member tovary lthe volumes o1' said chambers. each of said chambers beingprovided with a radially-outwardly-opening port spaced inwardly from thewall of said housing, a fluid outlet port for said housing, and meansproviding a radiallyinwardly-opening', peripherally extending groovebodily located upon the radiusof said chambers and communicating withsaid housing uid outlet port, whereby each of said chambers communicateswith said outlet port during a part of each rotation of said shaft, andcommunicates with the interior of said housing during the remainder ofeach rotation of said shaft.

